HW Solutions Reliability

# HW Solutions Reliability - Maintenance & Reliability...

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1. (3) You have the following monthly(12) repair frequency history accumulated over several years on one of the major pieces of equipment that is critical to your operation. If the average repair cost (parts and labor) is \$ 125 per repair, calculate the annual repair budget for this piece of equipment. # Breakdowns/month Probability 0 .03 1 .05 2 .07 3 .10 4 .12 5 .13 6 .12 7 .16 8 .11 9 .09 10 .02 (0)(.03)+(1)(.05)+(2)(.07)+(3)(.10)+(4)(.12)+(5)(.13)+(6)(.12)+(7)(.16)+(8)(.11)+(9)(.09)+ (10) (.02)= 5.35 5.35breakdowns*125 per repair=668.75*12monthly= 8025 2. (a) (4) The maintenance supervisor for your company has provided the following failure frequency information on your primary manufacturing machine. If the average cost of a repair is \$400, calculate your average weekly repair cost. Breakdowns per week 0 1 2 3 4 Weekly frequency 5 12 10 18 5 5+12+10+18+5=50 Weekly repair cost = 400*2.12 = 848 (b) (1) If you put a Preventive Maintenance program in place that will reduce the average

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## This note was uploaded on 02/27/2012 for the course MSOM 301 taught by Professor Bugge during the Spring '12 term at Temple.

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HW Solutions Reliability - Maintenance & Reliability...

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